CN114118326A - Full-life-cycle aviation material management method and system based on radio frequency tags - Google Patents
Full-life-cycle aviation material management method and system based on radio frequency tags Download PDFInfo
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Abstract
The invention discloses a full-life-cycle aviation material management method and system based on a radio frequency tag. The method comprises the following steps: when the aviation materials are sealed and stored from the production line, generating basic elements of the label and information safety codes, and writing the basic elements and the information safety codes into the radio frequency label; activating a radio frequency communication link of a radio frequency tag; reading and decoding a full life cycle tracking management data set of the aviation material; reading and checking a security code of the radio frequency tag information of the navigation material; operating a full life cycle tracking management data set of the aviation materials and completing code writing; regenerating a new information security code; the radio frequency communication link is closed. By using the invention, the mass data management of a plurality of users can be realized based on the limited capacity of the radio frequency tag, and the data safety can be ensured.
Description
Technical Field
The invention relates to a radio frequency tag-based full-life cycle aviation material management method, simultaneously relates to a corresponding full-life cycle aviation material management system, and belongs to the technical field of aviation material management.
Background
Civil aviation maintenance is a system project, and each detail of an actual maintenance operation process needs to be treated rigorously. For example, in operation, it is necessary to perform "history control" for all the accessories detached from the aircraft, to specify information such as the name, part number, detachment position, detachment cause, relevant instruction number, detachment date, operator, etc. of the accessory, and to attach different identification tags to different accessories. Therefore, attempts have been made to introduce radio frequency tag (RFID) technology in the management of aerospace materials.
For example, in chinese invention application No. 201911031170.5, an RFID-based shipping material management system is disclosed. The system comprises a navigation material RFID label, an RFID reader, an RFID middleware and a navigation material management information subsystem; the RFID tag of the aviation material has uniqueness and is formed by a coupling element and a chip; the RFID reader is a device specially responsible for reading and writing in the information of the navigation material label, and consists of a coupling module, a signal processing and control module, a radio frequency module and the like; the RFID middleware is a software system based on an information transfer mechanism and connects the RFID reader at the bottom layer with the aircraft material management information subsystem at the top layer.
However, the whole life cycle management of the navigation materials needs a large amount of data as a support, and the current radio frequency tags are subject to factors such as manufacturing process and application cost, and the like, so that the problem of small storage capacity generally exists, and all fields cannot be completely included. Meanwhile, as the radio frequency tag is a wireless response type device, the data access security is low, and the security risk caused by the data tampering problem is easy to occur. However, as the whole life cycle material management becomes a development trend, it is necessary to use one rf tag to accommodate mass data of each unit and also to ensure data security. This has become one of the core problems that the industry is keenly awaiting solution.
Disclosure of Invention
The invention aims to provide a full-life-cycle aviation material management method based on a radio frequency tag.
Another technical problem to be solved by the present invention is to provide a full-life cycle material management system based on radio frequency tags.
In order to achieve the purpose, the invention adopts the following technical scheme:
according to a first aspect of the embodiments of the present invention, there is provided a full-life cycle material management method based on a radio frequency tag, including the following steps:
s1: when the aviation materials are sealed and stored from the production line, generating basic elements of the label and information safety codes, and writing the basic elements and the information safety codes into the radio frequency label;
s2: activating a radio frequency communication link of a radio frequency tag;
s3: reading and decoding a full life cycle tracking management data set of the aviation material;
s4: reading and checking a security code of the radio frequency tag information of the navigation material;
s5: operating the full life cycle tracking management data set of the aviation materials and completing code writing;
s6: regenerating a new information security code;
s7: the radio frequency communication link is closed.
Preferably, the step S4 includes the following steps:
s41: checking the data check code by using a first checking algorithm, and entering the next step if the data check code is judged to be valid; otherwise, ending;
s42: checking the information security code by using a second checking algorithm, and if the information security code is judged to be valid, entering the step S43; if the judgment is invalid, the flow proceeds to step S44;
s43: acquiring the authority for operating the full life cycle tracking management data set of the aviation materials, starting read-write operation, and entering step S5;
s44: and inhibiting the operation of the data set and ending the process.
Preferably, the radio frequency tag fixed on the navigation material comprises a tag basic element and a data verification code, wherein the tag basic element covers main data elements in the full life cycle management of the navigation material, and the name of the tag basic element is unique.
Preferably, there is a one-to-one relationship between the basic elements of the tag and entity data, and the entity data is stored in the radio frequency tag.
Preferably, the data structure of the radio frequency tag comprises at least one layer of data and two layers of data, wherein one layer of data comprises a user storage area, a TID storage area, an EPC storage area and a reserved internal storage area,
each storage area comprises a plurality of label basic elements as two-layer data.
Preferably, in step S6, a new information security code is generated according to a preset algorithm based on the value of the new label basic element.
Preferably, the new information security code is written into a corresponding structure of the radio frequency tag, constituting a part of the information contained by the radio frequency tag, for the next reading and/or verification.
According to a second aspect of the embodiments of the present invention, a full-life cycle aviation material management system based on a radio frequency tag is provided, which includes an aviation material information carrier layer, an aviation material information read-write layer and an aviation material data service comprehensive processing layer, where the aviation material information read-write layer reads data in the aviation material information carrier layer, and the aviation material data service comprehensive processing layer or the aviation material information read-write layer stores a computer program for executing the full-life cycle aviation material management method.
Compared with the prior art, the radio frequency tag has the tag basic elements and the information security codes required by full life cycle aviation material management, and the data reading and writing safety and the data consistency are ensured by utilizing the inspection of the information security codes; the mass data sharing of the radio frequency tags with small capacity is realized by utilizing the one-to-one correspondence between the basic elements of the tags and the data elements in the full life cycle tracking management data set of the aviation materials and synchronous updating.
Drawings
Fig. 1 is a schematic logical structure diagram of a full-life-cycle aircraft material management system based on a radio frequency tag according to an embodiment of the present invention;
fig. 2 is a schematic flowchart of a full-life-cycle material management method based on a radio frequency tag according to an embodiment of the present invention;
FIG. 3 is a schematic flow chart illustrating the process of checking the RFID tag information security code in FIG. 2;
FIG. 4 is an exemplary table of basic attribute information in a unified avionics data set, in accordance with an embodiment of the present invention;
FIG. 5 is an exemplary table of the application environment information, the belonging status information, and the product price information in the unified avionics data set in the embodiment of the present invention;
FIG. 6 is an example table of product life information in a unified avionics data set, in accordance with an embodiment of the present invention;
FIG. 7 is an example table of product assurance information and dynamic management information in a unified avionics data set, in accordance with an embodiment of the present invention.
Detailed Description
The technical contents of the invention are described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a first embodiment of the present invention discloses a full-life-cycle aircraft material management system based on radio frequency tags, which includes an aircraft material information carrier layer, an aircraft material information read-write layer, and an aircraft material data service comprehensive processing layer.
The navigation material information carrier layer comprises radio frequency tags, two-dimensional code tags and other tags which can be written in electronically. The radio frequency tag can be repeatedly used, and only the tag information needs to be rewritten and changed; since the two-dimensional code information is written in irreversibility, the radio frequency tag is used in the present invention, or the radio frequency tag is combined with the two-dimensional code tag, which is hereinafter referred to as a radio frequency tag for explanation, but the present invention is not limited thereto.
The navigation material information reading and writing layer comprises a reader-writer which is used for reading or writing the radio frequency tag and is divided into a movable reading and writing device and a fixed reading and writing device.
The comprehensive processing layer of the aviation material data service comprises a server, a server cluster, a database cluster, safety equipment, an aviation material data gateway, a data compiling tool and the like. Since the server cluster, the database cluster, the security device, the navigation material data gateway, and the data compiling tool all communicate with the server to implement information processing for multiple users, the following description will be given by taking the server as a representative.
Referring to fig. 2 and 3, the method for full-life cycle materials management based on radio frequency tags comprises the following steps:
s1: and when the aviation material is sealed and stored from the production line, generating basic elements of the label and an information safety code, and writing the basic elements and the information safety code into the radio frequency label.
When the navigation material is sealed and stored from the production line, the reader and the radio frequency tag are used for reading and writing, and the interaction protocol of the navigation material information carrier layer and the navigation material information reading layer is used, so that the required navigation material full life cycle tracking management data set (hereinafter referred to as data set) can be efficiently, reliably and safely mapped and stored in the radio frequency tag entity.
For example, to implement full lifecycle tracking management, unique identification of the aircraft materials is required, which requires the use of vendor codes (MFCs) and serial numbers (PSNs) in the data set. By the method, basic data elements (supplier codes (MFC) and serial numbers (PSN)) in the navigation material data set are converted into entity data to be written into the radio frequency tag on the navigation material.
Referring to table 1 below, the radio frequency tag used in the present invention writes structured tag basic elements, and expresses the data structure in the data set in a structured manner, and there are multiple tag basic elements in one structure, and the relationship is generally in a "one-to-many" form.
The data structure of the data set is shown in fig. 4 to 7. The aeronautical material data elements can be roughly classified into seven types: basic attribute information, application environment information, belonging state information, product price information, product life information, product guarantee information and dynamic management information.
The basic attribute information is information that is totally shared (all roles can be read by a reader) and is not modifiable after initialization. The basic attribute information includes a tag part number, a supplier code, and the like, and only describes the attribute of the flight material itself and a user name for processing the flight material, which is information that needs to be used by most users. The application environment information refers to the use, storage and transportation environment related information of the aviation material. The state information refers to the relevant information of the aviation use state of the aviation material. The product price information refers to price and cost information related to the aviation material. The product life information refers to the life of the aviation material in different stages and the related information of different types of life. The product guarantee information refers to failure and maintenance related information. The dynamic management information refers to information related to transportation or warehouse management of the shipping materials.
In the application environment information, the affiliated state information, the product price information, the product life information, the product guarantee information and the dynamic management information, only part of contents are shared to all users, which is called 'whole member shared information'; part of the content is shared only within the scope of the user (namely, is shared only among the internal personnel of the user), and is called internal shared information; and part of the content is only shared to other users with corresponding rights (namely, only other users with corresponding rights can read or write the part of the content), which is called as external shared information.
It should be noted that fig. 4 to 7 are only examples for facilitating understanding and do not limit the present invention.
The radio frequency tag fixed on the navigation material comprises a tag basic element and a data verification code. The basic elements of the label cover main data elements in the full life cycle management of the aviation material, and the name of the basic elements of the label is unique, so that the basic elements of the label are not mixed when each user uses the basic elements. For example: the EPC region of the data structure of the radio frequency tag contains a data element, Part Number (PNR), whose name is unique and different from the names of other data elements.
There is a "one-to-one" relationship between the label base element and the entity data. Entity data is actually stored in the tag, and is represented in 16-ary form in the embodiment of the present invention. And, the entity data is unique. For example: this tag primitive of the state code (SAC) is represented by entity data 534143.
Table 1: data structure table of radio frequency tag
As shown in table 1, the data structure of the radio frequency tag includes at least one layer of data and two layers of data, wherein the one layer of data includes a user storage area, a TID storage area, an EPC storage area, and a reserved internal storage area. The radio frequency tag manufacturer has divided the physical structure of the tag into a user memory area, a TID memory area, an EPC memory area, and a reserved internal memory area. However, since the storage capacity and the access authority of each area are different from each other, different data is stored according to the capacity and the access authority of each area. For example: the authority of the TID storage area is read only; the authority of the user storage area and the EPC storage area is read and written.
Each storage area includes a plurality of tag primitives as two-layer data. For example, the reserved internal storage area includes basic elements of labels such as access control and control password. The user storage area comprises a plurality of label basic elements such as a classification code (SPC), a state code (SAC), an Information Security Code (ISC) and an extensible element. As can be seen from fig. 4 to 7, the basic elements of the label have a one-to-one correspondence relationship with the data elements in the data set, and the basic elements of the label are included in the total life cycle tracking management data set of the marine material. In short, the data set is large and the tag base element set is small.
The first layer data and the second layer data are formed by configuring the hierarchy and the correlation in advance, and the above table is only schematic and can be changed according to the actual situation. In the embodiment of the invention, each layer of data has a fixed attribute and an extended attribute. The fixed attributes may be pre-configurable, while the number and content of the extended attributes may be post-configurable.
The label basic elements are used as two-layer data and are in one-to-one correspondence with the entity data to form an entity data mapping relation, and the mapping relation is configured in advance and stored in the server. In a networking state, the reader-writer can obtain the mapping relation by accessing the server; in the off-line state, the mapping relationship is stored in the reader-writer. Thus, the reader can read entity data and automatically map to the basic elements of the label.
S2: the radio frequency communication link of the radio frequency tag is activated.
When a logistics company, an airline company or the like processes (including transportation, installation and the like) the aircraft materials, the reader-writer is used for activating the radio frequency communication link of the radio frequency tag.
The radio frequency communication activation process of the radio frequency tag comprises all physical processes for establishing communication, and the main processes comprise wireless power control, tag chip power-on, technical information request, technical information response and the like until the internal data state of the tag can be sent. This is a common technique in the art and will not be described here in a repeated manner.
S3: and reading and decoding the full life cycle tracking management data set of the aviation material.
The data elements in the data set and the basic elements of the labels have one-to-one mapping relation to form the mapping relation of the data set. The entity data mapping relation and the data set mapping relation are both in one-to-one correspondence, so that the one-to-one correspondence of the entity data and the data elements in the data set can be established. Data elements in a data set corresponding to one another can be obtained by reading or changing entity data; on the contrary, the server can modify the content corresponding to the entity data by modifying the data elements.
And reading entity data in the radio frequency tag by using a reader-writer, and obtaining basic elements of the tag and data elements in the data set by using the entity data mapping relation and the data set mapping relation.
By utilizing the reader-writer, the data elements in the data set can also be written into the radio frequency tag in the form of entity data for storage or modification.
S4: and reading and checking the information security code of the radio frequency tag of the aviation material.
And the reader-writer simultaneously reads the information security code of the radio frequency tag and stores the information security code into the buffer.
In one embodiment of the invention, the information security code adopts a double-code-segment logic structure. Wherein the dual code segment includes two parts: a data check code and a user identification code. The tag's own element data is encrypted by MD5 to obtain a check code (e.g., time, part number, etc.). The user identification code is optional, for example, the identification code of east navigation, and only east navigation has the authority to read the related elements. After reading, the information security code is cached. And then, the data check code and the user identification code are respectively checked through an algorithm, so that the consistency of the data in the label is ensured, and the data is prevented from being tampered. Verifying the data check code through a first verification algorithm; the user identification code is verified through a second verification algorithm, the first verification algorithm and the second verification algorithm are different algorithms, and the consistency and the safety of data in the label can be further ensured. Therefore, the double-code-segment logic structure of the information security code can better ensure the security management of the aviation materials.
In an embodiment of the present invention, the checking the data check code or the user identification code respectively may include the following steps:
s41: checking the data check code by using a first checking algorithm, and entering the next step if the data check code is judged to be valid; otherwise, ending.
If the data check code is verified, the data check code is judged to be invalid, the consistency of basic elements of the label in the radio frequency label cannot be verified, the entity data carried by the radio frequency label is not trusted, and at the moment, in order to ensure the data safety, the radio frequency label is not operated any more, and only the label access control function can be operated or the data in the label is formatted and emptied.
If the data check code is verified, the data check code is judged to be valid, and the next step is carried out.
S42: checking the information security code by using a second checking algorithm, and if the information security code is judged to be valid, entering the step S43; if the determination is invalid, the routine proceeds to step S44.
Firstly, the consistency verification of the data in the label is completed based on the data check code through a first check algorithm, and the label is ensured not to be tampered. The data check code is generated by adopting a conventional Hash algorithm, a cyclic redundancy check code and the like based on assignment of all label basic elements in the radio frequency label. After the reader reads the data check code, the reader can check whether the data check code is correct by using a corresponding algorithm, so that the data consistency is judged.
S43: the authority to manipulate the data set is obtained and the read/write operation is started, and the process proceeds to step S5.
And when the information security code is valid, obtaining the authority for operating the data set. Here, the basic elements of "access control", "control password" are to be operated to obtain the right.
And modifying the basic elements of the tags in the radio frequency tags by using the reader-writer, deleting the basic elements of the tags in the radio frequency tags, operating the access control function in the radio frequency tags and the like. And after the operation is finished, generating the information security code again according to the algorithm.
S44: and inhibiting the operation of the data set and ending the process.
And when the information security code is invalid, prompting that the label information is wrong, and ending the process. Alternatively, the operator may prompt whether to format the tag, and select to format or end the process.
S5: and operating the full life cycle tracking management data set of the aviation materials and completing code writing.
Under the condition of conforming to the operating environment, the data elements with the existing authority (authorized) in the data set can be edited and stored in the radio frequency tag.
Hereinafter, specific contents written in the rf tag will be described as an example.
In the process of manufacturing the aeronautical materials, the serial number (PSN) is the basis of full life cycle tracking management and is the only method for identifying the individual aeronautical materials. In the production and manufacturing process, no matter a design and manufacturing unit or a supplier generates a serial number for the aviation material, and the uniqueness of the serial number is ensured. The factory date (MFD) is an element written into the radio frequency tag by a design and manufacturing unit or a supplier in the stock production and manufacturing process, and can provide necessary stock life basis for the current life piece and the like.
In the process of using the sailing materials by an airline company, the state code (SAC) of the sailing materials can be used for determining the state of the current sailing materials and recording the latest change date of the state of the sailing materials, and effective and necessary support can be provided for accurately controlling the total cost of ownership, reliability evaluation, traceability of sailing material histories and the like.
In the maintenance link of the aviation materials, the classification code (SPC) of the aviation materials is provided by a design and manufacture unit/supplier, so that the disposal mode of the aviation materials after being detached from the aircraft in a certain period can be effectively guided, if the aviation materials are defined as consumable parts, the aviation materials have no maintenance value and should be scrapped in time, and misuse is avoided.
In the reliability data analysis link, the state code (SAC), the factory date (MFD) and the like can be used for calculating the service life information (factory period, loading date, unloading date, total service time/number of times, service time/number of times after overhaul, total service life of parts, shelf life limit of parts, repair turnaround time in contracts and the like) of the aviation material, so that necessary treatment measures can be taken for the aviation material in time, aviation material inventory can be decided, the aviation material ownership cost can be controlled, and the like.
In different links, different users write or modify different or same basic elements of the tag based on different authorities.
S6: and regenerating a new information security code.
Any modification to the basic elements of the tag will result in a change to the information security code. Therefore, in step S6, it is necessary to generate a new information security code based on the values of these new tag basic elements according to a preset algorithm, modify the value of the "information security code" in the user storage area accordingly, and rewrite the entity data.
And writing the new information security code into a corresponding structure of the radio frequency tag to form a part of the information contained in the radio frequency tag for the next reading and/or verification. According to fig. 1, when in a networking state (including but not limited to intranet, private network, internet, etc.), the new information security code and the basic elements of the tag can be uploaded to a server and stored in a data set. When the mobile terminal is in the off-line state, the new information security code and the basic label element can be temporarily stored in an off-line/manual mode, and are transmitted to the server through the E-mail and the mobile storage device and stored in the data set.
S7: the radio frequency communication link is closed.
After the communication and the charging are completed for many times, the communication process between the reader-writer and the radio frequency tag is finished after all data transmission is confirmed.
The method and system for managing full-life cycle flight materials based on radio frequency tags provided by the invention are explained in detail above. It will be apparent to those skilled in the art that any obvious modifications thereof can be made without departing from the spirit of the invention, which infringes the patent right of the invention and bears the corresponding legal responsibility.
Claims (8)
1. A full life cycle aviation material management method based on radio frequency tags is characterized by comprising the following steps:
s1: when the aviation materials are sealed and stored from the production line, generating basic elements of the label and information safety codes, and writing the basic elements and the information safety codes into the radio frequency label;
s2: activating a radio frequency communication link of a radio frequency tag;
s3: reading and decoding a full life cycle tracking management data set of the aviation material;
s4: reading and checking a security code of the radio frequency tag information of the navigation material;
s5: operating the full life cycle tracking management data set of the aviation materials and completing code writing;
s6: regenerating a new information security code;
s7: the radio frequency communication link is closed.
2. The full-life-cycle materials management method of claim 1, wherein said step S4 comprises the following steps:
s41: checking the data check code by using a first checking algorithm, and entering the next step if the data check code is judged to be valid; otherwise, ending;
s42: checking the information security code by using a second checking algorithm, and if the information security code is judged to be valid, entering the step S43; if the judgment is invalid, the flow proceeds to step S44;
s43: acquiring the authority for operating the full life cycle tracking management data set of the aviation materials, starting read-write operation, and entering step S5;
s44: and inhibiting the operation of the data set and ending the process.
3. The full-life-cycle materials management method of claim 2, wherein:
the radio frequency tag fixed on the navigation material comprises tag basic elements and a data verification code, wherein the tag basic elements cover main data elements in the full life cycle management of the navigation material, and the name of the tag basic elements is unique.
4. The full-life cycle materials management method of claim 3, wherein:
the basic elements of the tag and entity data are in one-to-one relation, and the entity data are stored in the radio frequency tag.
5. The full-life cycle materials management method of claim 4, wherein:
the data structure of the radio frequency label at least comprises one layer of data and two layers of data, wherein the one layer of data comprises a user storage area, a TID storage area, an EPC storage area and a reserved internal storage area,
each storage area comprises a plurality of label basic elements as two-layer data.
6. The full-life cycle materials management method of claim 4, wherein:
in step S6, a new information security code is generated according to a preset algorithm based on the value of the new tag basic element.
7. The full-life cycle materials management method of claim 6, wherein:
and writing the new information security code into a corresponding structure of the radio frequency tag to form a part of the information contained in the radio frequency tag for the next reading and/or verification.
8. A full-life-cycle aviation material management system based on a radio frequency tag comprises an aviation material information carrier layer, an aviation material information read-write layer and an aviation material data service comprehensive processing layer, and is characterized in that the aviation material information read-write layer reads data in the aviation material information carrier layer, and a computer program is stored in the aviation material data service comprehensive processing layer or the aviation material information read-write layer and used for executing the full-life-cycle aviation material management method according to any one of claims 1 to 7.
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